| /* |
| * Copyright (c) 2020 Raspberry Pi (Trading) Ltd. |
| * |
| * SPDX-License-Identifier: BSD-3-Clause |
| */ |
| |
| .syntax unified |
| .cpu cortex-m0plus |
| .thumb |
| |
| #include "pico/asm_helper.S" |
| |
| .macro int64_section name |
| #if PICO_INT64_OPS_IN_RAM |
| .section RAM_SECTION_NAME(\name), "ax" |
| #else |
| .section SECTION_NAME(\name), "ax" |
| #endif |
| .endm |
| |
| int64_section __aeabi_lmul |
| |
| wrapper_func __aeabi_lmul |
| muls r1, r2 |
| muls r3, r0 |
| adds r1, r3 |
| mov r12, r1 |
| lsrs r1, r2, #16 |
| uxth r3, r0 |
| muls r3, r1 |
| push {r4} |
| lsrs r4, r0, #16 |
| muls r1, r4 |
| uxth r2, r2 |
| uxth r0, r0 |
| muls r0, r2 |
| muls r2, r4 |
| lsls r4, r3, #16 |
| lsrs r3, #16 |
| adds r0, r4 |
| pop {r4} |
| adcs r1, r3 |
| lsls r3, r2, #16 |
| lsrs r2, #16 |
| adds r0, r3 |
| adcs r1, r2 |
| add r1, r12 |
| bx lr |
